1 /*! \file ssl/ssl_lib.c
2 * \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
66 char *SSL_version_str="OpenSSL 0.9.2 31-Dec-1998";
68 static STACK *ssl_meth=NULL;
69 static STACK *ssl_ctx_meth=NULL;
70 static int ssl_meth_num=0;
71 static int ssl_ctx_meth_num=0;
73 SSL3_ENC_METHOD ssl3_undef_enc_method={
74 ssl_undefined_function,
75 ssl_undefined_function,
76 ssl_undefined_function,
77 ssl_undefined_function,
78 ssl_undefined_function,
79 ssl_undefined_function,
86 if (s->method == NULL)
88 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
97 /* This is set if we are doing dynamic renegotiation so keep
98 * the old cipher. It is sort of a SSL_clear_lite :-) */
99 if (s->new_session) return(1);
102 state=s->state; /* Keep to check if we throw away the session-id */
105 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
107 s->version=s->method->version;
108 s->client_version=s->version;
109 s->rwstate=SSL_NOTHING;
110 s->rstate=SSL_ST_READ_HEADER;
111 s->read_ahead=s->ctx->read_ahead;
113 if (s->init_buf != NULL)
115 BUF_MEM_free(s->init_buf);
119 ssl_clear_cipher_ctx(s);
121 if (ssl_clear_bad_session(s))
123 SSL_SESSION_free(s->session);
130 /* Check to see if we were changed into a different method, if
131 * so, revert back if we are not doing session-id reuse. */
132 if ((s->session == NULL) && (s->method != s->ctx->method))
134 s->method->ssl_free(s);
135 s->method=s->ctx->method;
136 if (!s->method->ssl_new(s))
141 s->method->ssl_clear(s);
145 /** Used to change an SSL_CTXs default SSL method type */
146 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
152 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
153 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
154 if ((sk == NULL) || (sk_num(sk) <= 0))
156 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
162 SSL *SSL_new(SSL_CTX *ctx)
168 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
171 if (ctx->method == NULL)
173 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
177 s=(SSL *)Malloc(sizeof(SSL));
178 if (s == NULL) goto err;
179 memset(s,0,sizeof(SSL));
181 if (ctx->default_cert != NULL)
183 CRYPTO_add(&ctx->default_cert->references,1,
184 CRYPTO_LOCK_SSL_CERT);
185 s->cert=ctx->default_cert;
189 s->verify_mode=ctx->verify_mode;
190 s->verify_callback=ctx->default_verify_callback;
191 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
194 s->verify_result=X509_V_OK;
196 s->method=ctx->method;
198 if (!s->method->ssl_new(s))
205 s->quiet_shutdown=ctx->quiet_shutdown;
207 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
208 s->options=ctx->options;
211 CRYPTO_new_ex_data(ssl_meth,(char *)s,&s->ex_data);
215 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
219 void SSL_free(SSL *s)
226 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
234 fprintf(stderr,"SSL_free, bad reference count\n");
239 CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
243 /* If the buffering BIO is in place, pop it off */
244 if (s->bbio == s->wbio)
246 s->wbio=BIO_pop(s->wbio);
252 BIO_free_all(s->rbio);
253 if ((s->wbio != NULL) && (s->wbio != s->rbio))
254 BIO_free_all(s->wbio);
256 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
258 /* add extra stuff */
259 if (s->cipher_list != NULL) sk_free(s->cipher_list);
260 if (s->cipher_list_by_id != NULL) sk_free(s->cipher_list_by_id);
262 /* Make the next call work :-) */
263 if (s->session != NULL)
265 ssl_clear_bad_session(s);
266 SSL_SESSION_free(s->session);
269 ssl_clear_cipher_ctx(s);
271 if (s->cert != NULL) ssl_cert_free(s->cert);
272 /* Free up if allocated */
274 if (s->ctx) SSL_CTX_free(s->ctx);
276 if (s->client_CA != NULL)
277 sk_pop_free(s->client_CA,X509_NAME_free);
279 if (s->method != NULL) s->method->ssl_free(s);
284 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
286 /* If the output buffering BIO is still in place, remove it
290 if (s->wbio == s->bbio)
292 s->wbio=s->wbio->next_bio;
293 s->bbio->next_bio=NULL;
296 if ((s->rbio != NULL) && (s->rbio != rbio))
297 BIO_free_all(s->rbio);
298 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
299 BIO_free_all(s->wbio);
304 BIO *SSL_get_rbio(SSL *s)
307 BIO *SSL_get_wbio(SSL *s)
310 int SSL_get_fd(SSL *s)
316 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
323 int SSL_set_fd(SSL *s,int fd)
328 bio=BIO_new(BIO_s_socket());
332 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
335 BIO_set_fd(bio,fd,BIO_NOCLOSE);
336 SSL_set_bio(s,bio,bio);
342 int SSL_set_wfd(SSL *s,int fd)
347 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
348 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
350 bio=BIO_new(BIO_s_socket());
353 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
354 BIO_set_fd(bio,fd,BIO_NOCLOSE);
355 SSL_set_bio(s,SSL_get_rbio(s),bio);
358 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
364 int SSL_set_rfd(SSL *s,int fd)
369 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
370 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
372 bio=BIO_new(BIO_s_socket());
376 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
379 BIO_set_fd(bio,fd,BIO_NOCLOSE);
380 SSL_set_bio(s,bio,SSL_get_wbio(s));
383 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
390 int SSL_get_verify_mode(SSL *s)
392 return(s->verify_mode);
395 int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
397 return(s->verify_callback);
400 int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
402 return(ctx->verify_mode);
405 int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
407 return(ctx->default_verify_callback);
410 void SSL_set_verify(SSL *s,int mode,
411 int (*callback)(int ok,X509_STORE_CTX *ctx))
414 if (callback != NULL)
415 s->verify_callback=callback;
418 void SSL_set_read_ahead(SSL *s,int yes)
423 int SSL_get_read_ahead(SSL *s)
425 return(s->read_ahead);
428 int SSL_pending(SSL *s)
430 return(s->method->ssl_pending(s));
433 X509 *SSL_get_peer_certificate(SSL *s)
437 if ((s == NULL) || (s->session == NULL))
442 if (r == NULL) return(r);
444 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
449 STACK *SSL_get_peer_cert_chain(SSL *s)
453 if ((s == NULL) || (s->session == NULL) || (s->session->cert == NULL))
456 r=s->session->cert->cert_chain;
461 /* Now in theory, since the calling process own 't' it should be safe to
462 * modify. We need to be able to read f without being hassled */
463 void SSL_copy_session_id(SSL *t,SSL *f)
467 /* Do we need to to SSL locking? */
468 SSL_set_session(t,SSL_get_session(f));
470 /* what if we are setup as SSLv2 but want to talk SSLv3 or
472 if (t->method != f->method)
474 t->method->ssl_free(t); /* cleanup current */
475 t->method=f->method; /* change method */
476 t->method->ssl_new(t); /* setup new */
482 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
487 if (tmp != NULL) ssl_cert_free(tmp);
490 /* Fix this so it checks all the valid key/cert options */
491 int SSL_CTX_check_private_key(SSL_CTX *ctx)
493 if ( (ctx == NULL) ||
494 (ctx->default_cert == NULL) ||
495 (ctx->default_cert->key->x509 == NULL))
497 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
500 if (ctx->default_cert->key->privatekey == NULL)
502 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
505 return(X509_check_private_key(ctx->default_cert->key->x509, ctx->default_cert->key->privatekey));
508 /* Fix this function so that it takes an optional type parameter */
509 int SSL_check_private_key(SSL *ssl)
513 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
516 if (ssl->cert == NULL)
517 return(SSL_CTX_check_private_key(ssl->ctx));
518 if (ssl->cert->key->x509 == NULL)
520 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
523 if (ssl->cert->key->privatekey == NULL)
525 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
528 return(X509_check_private_key(ssl->cert->key->x509,
529 ssl->cert->key->privatekey));
532 int SSL_accept(SSL *s)
534 return(s->method->ssl_accept(s));
537 int SSL_connect(SSL *s)
539 return(s->method->ssl_connect(s));
542 long SSL_get_default_timeout(SSL *s)
544 return(s->method->get_timeout());
547 int SSL_read(SSL *s,char *buf,int num)
549 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
551 s->rwstate=SSL_NOTHING;
554 return(s->method->ssl_read(s,buf,num));
557 int SSL_peek(SSL *s,char *buf,int num)
559 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
563 return(s->method->ssl_peek(s,buf,num));
566 int SSL_write(SSL *s,const char *buf,int num)
568 if (s->shutdown & SSL_SENT_SHUTDOWN)
570 s->rwstate=SSL_NOTHING;
571 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
574 return(s->method->ssl_write(s,buf,num));
577 int SSL_shutdown(SSL *s)
579 if ((s != NULL) && !SSL_in_init(s))
580 return(s->method->ssl_shutdown(s));
585 int SSL_renegotiate(SSL *s)
588 return(s->method->ssl_renegotiate(s));
591 long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
597 case SSL_CTRL_GET_READ_AHEAD:
598 return(s->read_ahead);
599 case SSL_CTRL_SET_READ_AHEAD:
603 case SSL_CTRL_OPTIONS:
604 return(s->options|=larg);
606 return(s->method->ssl_ctrl(s,cmd,larg,parg));
611 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
617 case SSL_CTRL_GET_READ_AHEAD:
618 return(ctx->read_ahead);
619 case SSL_CTRL_SET_READ_AHEAD:
621 ctx->read_ahead=larg;
624 case SSL_CTRL_SET_SESS_CACHE_SIZE:
625 l=ctx->session_cache_size;
626 ctx->session_cache_size=larg;
628 case SSL_CTRL_GET_SESS_CACHE_SIZE:
629 return(ctx->session_cache_size);
630 case SSL_CTRL_SET_SESS_CACHE_MODE:
631 l=ctx->session_cache_mode;
632 ctx->session_cache_mode=larg;
634 case SSL_CTRL_GET_SESS_CACHE_MODE:
635 return(ctx->session_cache_mode);
637 case SSL_CTRL_SESS_NUMBER:
638 return(ctx->sessions->num_items);
639 case SSL_CTRL_SESS_CONNECT:
640 return(ctx->stats.sess_connect);
641 case SSL_CTRL_SESS_CONNECT_GOOD:
642 return(ctx->stats.sess_connect_good);
643 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
644 return(ctx->stats.sess_connect_renegotiate);
645 case SSL_CTRL_SESS_ACCEPT:
646 return(ctx->stats.sess_accept);
647 case SSL_CTRL_SESS_ACCEPT_GOOD:
648 return(ctx->stats.sess_accept_good);
649 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
650 return(ctx->stats.sess_accept_renegotiate);
651 case SSL_CTRL_SESS_HIT:
652 return(ctx->stats.sess_hit);
653 case SSL_CTRL_SESS_CB_HIT:
654 return(ctx->stats.sess_cb_hit);
655 case SSL_CTRL_SESS_MISSES:
656 return(ctx->stats.sess_miss);
657 case SSL_CTRL_SESS_TIMEOUTS:
658 return(ctx->stats.sess_timeout);
659 case SSL_CTRL_SESS_CACHE_FULL:
660 return(ctx->stats.sess_cache_full);
661 case SSL_CTRL_OPTIONS:
662 return(ctx->options|=larg);
664 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
669 int ssl_cipher_id_cmp(SSL_CIPHER *a,SSL_CIPHER *b)
677 return((l > 0)?1:-1);
680 int ssl_cipher_ptr_id_cmp(SSL_CIPHER **ap,SSL_CIPHER **bp)
684 l=(*ap)->id-(*bp)->id;
688 return((l > 0)?1:-1);
691 /** return a STACK of the ciphers available for the SSL and in order of
693 STACK *SSL_get_ciphers(SSL *s)
695 if ((s != NULL) && (s->cipher_list != NULL))
697 return(s->cipher_list);
699 else if ((s->ctx != NULL) &&
700 (s->ctx->cipher_list != NULL))
702 return(s->ctx->cipher_list);
707 /** return a STACK of the ciphers available for the SSL and in order of
709 STACK *ssl_get_ciphers_by_id(SSL *s)
711 if ((s != NULL) && (s->cipher_list_by_id != NULL))
713 return(s->cipher_list_by_id);
715 else if ((s != NULL) && (s->ctx != NULL) &&
716 (s->ctx->cipher_list_by_id != NULL))
718 return(s->ctx->cipher_list_by_id);
723 /** The old interface to get the same thing as SSL_get_ciphers() */
724 char *SSL_get_cipher_list(SSL *s,int n)
729 if (s == NULL) return(NULL);
730 sk=SSL_get_ciphers(s);
731 if ((sk == NULL) || (sk_num(sk) <= n))
733 c=(SSL_CIPHER *)sk_value(sk,n);
734 if (c == NULL) return(NULL);
738 /** specify the ciphers to be used by defaut by the SSL_CTX */
739 int SSL_CTX_set_cipher_list(SSL_CTX *ctx,char *str)
743 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
744 &ctx->cipher_list_by_id,str);
746 return((sk == NULL)?0:1);
749 /** specify the ciphers to be used by the SSL */
750 int SSL_set_cipher_list(SSL *s,char *str)
754 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
755 &s->cipher_list_by_id,str);
757 return((sk == NULL)?0:1);
760 /* works well for SSLv2, not so good for SSLv3 */
761 char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
768 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
773 sk=s->session->ciphers;
774 for (i=0; i<sk_num(sk); i++)
776 /* Decrement for either the ':' or a '\0' */
778 c=(SSL_CIPHER *)sk_value(sk,i);
779 for (cp=c->name; *cp; )
795 int ssl_cipher_list_to_bytes(SSL *s,STACK *sk,unsigned char *p)
801 if (sk == NULL) return(0);
804 for (i=0; i<sk_num(sk); i++)
806 c=(SSL_CIPHER *)sk_value(sk,i);
807 j=ssl_put_cipher_by_char(s,c,p);
813 STACK *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,STACK **skp)
819 n=ssl_put_cipher_by_char(s,NULL,NULL);
822 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
825 if ((skp == NULL) || (*skp == NULL))
826 sk=sk_new(NULL); /* change perhaps later */
833 for (i=0; i<num; i+=n)
835 c=ssl_get_cipher_by_char(s,p);
839 if (!sk_push(sk,(char *)c))
841 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
851 if ((skp == NULL) || (*skp == NULL))
856 unsigned long SSL_SESSION_hash(SSL_SESSION *a)
861 ((unsigned int) a->session_id[0] )|
862 ((unsigned int) a->session_id[1]<< 8L)|
863 ((unsigned long)a->session_id[2]<<16L)|
864 ((unsigned long)a->session_id[3]<<24L);
868 int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
870 if (a->ssl_version != b->ssl_version)
872 if (a->session_id_length != b->session_id_length)
874 return(memcmp(a->session_id,b->session_id,a->session_id_length));
877 SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
883 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
887 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
889 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
892 ret=(SSL_CTX *)Malloc(sizeof(SSL_CTX));
896 memset(ret,0,sizeof(SSL_CTX));
900 ret->cert_store=NULL;
901 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
902 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
903 ret->session_cache_head=NULL;
904 ret->session_cache_tail=NULL;
906 /* We take the system default */
907 ret->session_timeout=meth->get_timeout();
909 ret->new_session_cb=NULL;
910 ret->remove_session_cb=NULL;
911 ret->get_session_cb=NULL;
913 memset((char *)&ret->stats,0,sizeof(ret->stats));
916 ret->quiet_shutdown=0;
918 /* ret->cipher=NULL;*/
919 /* ret->s2->challenge=NULL;
920 ret->master_key=NULL;
922 ret->s2->conn_id=NULL; */
924 ret->info_callback=NULL;
926 ret->app_verify_callback=NULL;
927 ret->app_verify_arg=NULL;
930 ret->verify_mode=SSL_VERIFY_NONE;
931 ret->default_verify_callback=NULL;
932 if ((ret->default_cert=ssl_cert_new()) == NULL)
935 ret->default_passwd_callback=NULL;
936 ret->client_cert_cb=NULL;
938 ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp);
939 if (ret->sessions == NULL) goto err;
940 ret->cert_store=X509_STORE_new();
941 if (ret->cert_store == NULL) goto err;
943 ssl_create_cipher_list(ret->method,
944 &ret->cipher_list,&ret->cipher_list_by_id,
945 SSL_DEFAULT_CIPHER_LIST);
946 if ((ret->cipher_list == NULL) || (sk_num(ret->cipher_list) <= 0))
948 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
952 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
954 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
957 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
959 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
962 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
964 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
968 if ((ret->client_CA=sk_new_null()) == NULL)
971 CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
973 ret->extra_certs=NULL;
974 ret->comp_methods=SSL_COMP_get_compression_methods();
978 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
980 if (ret != NULL) SSL_CTX_free(ret);
984 void SSL_CTX_free(SSL_CTX *a)
988 if (a == NULL) return;
990 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
992 REF_PRINT("SSL_CTX",a);
998 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1002 CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
1004 if (a->sessions != NULL)
1006 SSL_CTX_flush_sessions(a,0);
1007 lh_free(a->sessions);
1009 if (a->cert_store != NULL)
1010 X509_STORE_free(a->cert_store);
1011 if (a->cipher_list != NULL)
1012 sk_free(a->cipher_list);
1013 if (a->cipher_list_by_id != NULL)
1014 sk_free(a->cipher_list_by_id);
1015 if (a->default_cert != NULL)
1016 ssl_cert_free(a->default_cert);
1017 if (a->client_CA != NULL)
1018 sk_pop_free(a->client_CA,X509_NAME_free);
1019 if (a->extra_certs != NULL)
1020 sk_pop_free(a->extra_certs,X509_free);
1021 if (a->comp_methods != NULL)
1022 sk_pop_free(a->comp_methods,free);
1026 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx,int (*cb)())
1028 ctx->default_passwd_callback=cb;
1031 void SSL_CTX_set_cert_verify_cb(SSL_CTX *ctx,int (*cb)(),char *arg)
1033 ctx->app_verify_callback=cb;
1034 ctx->app_verify_arg=arg;
1037 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1039 ctx->verify_mode=mode;
1040 ctx->default_verify_callback=cb;
1041 /* This needs cleaning up EAY EAY EAY */
1042 X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
1045 /* Need default_cert to check for callbacks, for now (see comment in CERT
1048 void ssl_set_cert_masks(CERT *c,CERT *default_cert,SSL_CIPHER *cipher)
1051 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1052 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1053 int rsa_tmp_export,dh_tmp_export,kl;
1054 unsigned long mask,emask;
1056 if (c == NULL) return;
1058 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1061 rsa_tmp=(c->rsa_tmp != NULL || default_cert->rsa_tmp_cb != NULL);
1062 rsa_tmp_export=(default_cert->rsa_tmp_cb != NULL ||
1063 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1065 rsa_tmp=rsa_tmp_export=0;
1068 dh_tmp=(c->dh_tmp != NULL || default_cert->dh_tmp_cb != NULL);
1069 dh_tmp_export=(default_cert->dh_tmp_cb != NULL ||
1070 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1072 dh_tmp=dh_tmp_export=0;
1075 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1076 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1077 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1078 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1079 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1080 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1081 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1082 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1083 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1084 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1085 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1086 /* FIX THIS EAY EAY EAY */
1087 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1088 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1094 printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1095 rsa_tmp,rsa_tmp_export,dh_tmp,
1096 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1099 if (rsa_enc || (rsa_tmp && rsa_sign))
1101 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1105 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1106 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1107 (rsa_enc || rsa_sign || dsa_sign))
1109 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1110 (rsa_enc || rsa_sign || dsa_sign))
1120 if (dh_rsa) mask|=SSL_kDHr;
1121 if (dh_rsa_export) emask|=SSL_kDHr;
1123 if (dh_dsa) mask|=SSL_kDHd;
1124 if (dh_dsa_export) emask|=SSL_kDHd;
1126 if (rsa_enc || rsa_sign)
1138 #ifdef SSL_ALLOW_ADH
1144 c->export_mask=emask;
1148 /* THIS NEEDS CLEANING UP */
1149 X509 *ssl_get_server_send_cert(SSL *s)
1151 unsigned long alg,mask,kalg;
1156 ssl_set_cert_masks(c,s->ctx->default_cert,s->s3->tmp.new_cipher);
1157 alg=s->s3->tmp.new_cipher->algorithms;
1158 export=SSL_IS_EXPORT(alg);
1159 mask=export?c->export_mask:c->mask;
1160 kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
1162 if (kalg & SSL_kDHr)
1164 else if (kalg & SSL_kDHd)
1166 else if (kalg & SSL_aDSS)
1167 i=SSL_PKEY_DSA_SIGN;
1168 else if (kalg & SSL_aRSA)
1170 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1171 i=SSL_PKEY_RSA_SIGN;
1175 else /* if (kalg & SSL_aNULL) */
1177 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
1180 if (c->pkeys[i].x509 == NULL) return(NULL);
1181 return(c->pkeys[i].x509);
1184 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1189 alg=cipher->algorithms;
1192 if ((alg & SSL_aDSS) &&
1193 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
1194 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
1195 else if (alg & SSL_aRSA)
1197 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
1198 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
1199 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
1200 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
1204 else /* if (alg & SSL_aNULL) */
1206 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
1211 void ssl_update_cache(SSL *s,int mode)
1215 /* If the session_id_length is 0, we are not supposed to cache it,
1216 * and it would be rather hard to do anyway :-) */
1217 if (s->session->session_id_length == 0) return;
1219 if ((s->ctx->session_cache_mode & mode)
1221 && SSL_CTX_add_session(s->ctx,s->session)
1222 && (s->ctx->new_session_cb != NULL))
1224 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
1225 if (!s->ctx->new_session_cb(s,s->session))
1226 SSL_SESSION_free(s->session);
1229 /* auto flush every 255 connections */
1230 i=s->ctx->session_cache_mode;
1231 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
1232 ((i & mode) == mode))
1234 if ( (((mode & SSL_SESS_CACHE_CLIENT)
1235 ?s->ctx->stats.sess_connect_good
1236 :s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
1238 SSL_CTX_flush_sessions(s->ctx,time(NULL));
1243 SSL_METHOD *SSL_get_ssl_method(SSL *s)
1248 int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
1253 if (s->method != meth)
1255 if (s->handshake_func != NULL)
1256 conn=(s->handshake_func == s->method->ssl_connect);
1258 if (s->method->version == meth->version)
1262 s->method->ssl_free(s);
1264 ret=s->method->ssl_new(s);
1268 s->handshake_func=meth->ssl_connect;
1270 s->handshake_func=meth->ssl_accept;
1275 int SSL_get_error(SSL *s,int i)
1281 if (i > 0) return(SSL_ERROR_NONE);
1283 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
1284 * etc, where we do encode the error */
1285 if ((l=ERR_peek_error()) != 0)
1287 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
1288 return(SSL_ERROR_SYSCALL);
1290 return(SSL_ERROR_SSL);
1293 if ((i < 0) && SSL_want_read(s))
1295 bio=SSL_get_rbio(s);
1296 if (BIO_should_read(bio))
1297 return(SSL_ERROR_WANT_READ);
1298 else if (BIO_should_write(bio))
1299 return(SSL_ERROR_WANT_WRITE);
1300 else if (BIO_should_io_special(bio))
1302 reason=BIO_get_retry_reason(bio);
1303 if (reason == BIO_RR_CONNECT)
1304 return(SSL_ERROR_WANT_CONNECT);
1306 return(SSL_ERROR_SYSCALL); /* unknown */
1310 if ((i < 0) && SSL_want_write(s))
1312 bio=SSL_get_wbio(s);
1313 if (BIO_should_write(bio))
1314 return(SSL_ERROR_WANT_WRITE);
1315 else if (BIO_should_read(bio))
1316 return(SSL_ERROR_WANT_READ);
1317 else if (BIO_should_io_special(bio))
1319 reason=BIO_get_retry_reason(bio);
1320 if (reason == BIO_RR_CONNECT)
1321 return(SSL_ERROR_WANT_CONNECT);
1323 return(SSL_ERROR_SYSCALL);
1326 if ((i < 0) && SSL_want_x509_lookup(s))
1328 return(SSL_ERROR_WANT_X509_LOOKUP);
1333 if (s->version == SSL2_VERSION)
1335 /* assume it is the socket being closed */
1336 return(SSL_ERROR_ZERO_RETURN);
1340 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
1341 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
1342 return(SSL_ERROR_ZERO_RETURN);
1345 return(SSL_ERROR_SYSCALL);
1348 int SSL_do_handshake(SSL *s)
1352 if (s->handshake_func == NULL)
1354 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
1358 s->method->ssl_renegotiate_check(s);
1360 if (SSL_in_init(s) || SSL_in_before(s))
1362 ret=s->handshake_func(s);
1367 /* For the next 2 functions, SSL_clear() sets shutdown and so
1368 * one of these calls will reset it */
1369 void SSL_set_accept_state(SSL *s)
1373 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
1374 s->handshake_func=s->method->ssl_accept;
1375 /* clear the current cipher */
1376 ssl_clear_cipher_ctx(s);
1379 void SSL_set_connect_state(SSL *s)
1383 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
1384 s->handshake_func=s->method->ssl_connect;
1385 /* clear the current cipher */
1386 ssl_clear_cipher_ctx(s);
1389 int ssl_undefined_function(SSL *s)
1391 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1395 SSL_METHOD *ssl_bad_method(int ver)
1397 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1401 char *SSL_get_version(SSL *s)
1403 if (s->version == TLS1_VERSION)
1405 else if (s->version == SSL3_VERSION)
1407 else if (s->version == SSL2_VERSION)
1413 SSL *SSL_dup(SSL *s)
1420 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) return(NULL);
1422 /* This copies version, session-id, SSL_METHOD and 'cert' */
1423 SSL_copy_session_id(ret,s);
1425 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
1426 SSL_set_verify(ret,SSL_get_verify_mode(s),
1427 SSL_get_verify_callback(s));
1429 SSL_set_info_callback(ret,SSL_get_info_callback(s));
1431 ret->debug=s->debug;
1432 ret->options=s->options;
1434 /* copy app data, a little dangerous perhaps */
1435 if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
1438 /* setup rbio, and wbio */
1439 if (s->rbio != NULL)
1441 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
1444 if (s->wbio != NULL)
1446 if (s->wbio != s->rbio)
1448 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
1452 ret->wbio=ret->rbio;
1455 /* dup the cipher_list and cipher_list_by_id stacks */
1456 if (s->cipher_list != NULL)
1458 if ((ret->cipher_list=sk_dup(s->cipher_list)) == NULL)
1461 if (s->cipher_list_by_id != NULL)
1462 if ((ret->cipher_list_by_id=sk_dup(s->cipher_list_by_id))
1466 /* Dup the client_CA list */
1467 if (s->client_CA != NULL)
1469 if ((sk=sk_dup(s->client_CA)) == NULL) goto err;
1471 for (i=0; i<sk_num(sk); i++)
1473 xn=(X509_NAME *)sk_value(sk,i);
1474 if ((sk_value(sk,i)=(char *)X509_NAME_dup(xn)) == NULL)
1482 ret->shutdown=s->shutdown;
1483 ret->state=s->state;
1484 ret->handshake_func=s->handshake_func;
1485 ret->server=s->server;
1490 if (ret != NULL) SSL_free(ret);
1496 void ssl_clear_cipher_ctx(SSL *s)
1498 if (s->enc_read_ctx != NULL)
1500 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
1501 Free(s->enc_read_ctx);
1502 s->enc_read_ctx=NULL;
1504 if (s->enc_write_ctx != NULL)
1506 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
1507 Free(s->enc_write_ctx);
1508 s->enc_write_ctx=NULL;
1510 if (s->expand != NULL)
1512 COMP_CTX_free(s->expand);
1515 if (s->compress != NULL)
1517 COMP_CTX_free(s->compress);
1522 /* Fix this function so that it takes an optional type parameter */
1523 X509 *SSL_get_certificate(SSL *s)
1525 if (s->cert != NULL)
1526 return(s->cert->key->x509);
1531 /* Fix this function so that it takes an optional type parameter */
1532 EVP_PKEY *SSL_get_privatekey(SSL *s)
1534 if (s->cert != NULL)
1535 return(s->cert->key->privatekey);
1540 SSL_CIPHER *SSL_get_current_cipher(SSL *s)
1542 if ((s->session != NULL) && (s->session->cipher != NULL))
1543 return(s->session->cipher);
1547 int ssl_init_wbio_buffer(SSL *s,int push)
1551 if (s->bbio == NULL)
1553 bbio=BIO_new(BIO_f_buffer());
1554 if (bbio == NULL) return(0);
1560 if (s->bbio == s->wbio)
1561 s->wbio=BIO_pop(s->wbio);
1564 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
1565 if (!BIO_set_read_buffer_size(bbio,1))
1567 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
1572 if (s->wbio != bbio)
1573 s->wbio=BIO_push(bbio,s->wbio);
1577 if (s->wbio == bbio)
1578 s->wbio=BIO_pop(bbio);
1583 void ssl_free_wbio_buffer(SSL *s)
1587 if (s->bbio == NULL) return;
1589 if (s->bbio == s->wbio)
1591 /* remove buffering */
1592 under=BIO_pop(s->wbio);
1602 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
1604 ctx->quiet_shutdown=mode;
1607 int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
1609 return(ctx->quiet_shutdown);
1612 void SSL_set_quiet_shutdown(SSL *s,int mode)
1614 s->quiet_shutdown=mode;
1617 int SSL_get_quiet_shutdown(SSL *s)
1619 return(s->quiet_shutdown);
1622 void SSL_set_shutdown(SSL *s,int mode)
1627 int SSL_get_shutdown(SSL *s)
1629 return(s->shutdown);
1632 int SSL_version(SSL *s)
1637 SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
1643 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
1645 return(X509_STORE_set_default_paths(ctx->cert_store));
1648 int SSL_CTX_load_verify_locations(SSL_CTX *ctx,char *CAfile,char *CApath)
1650 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
1654 void SSL_set_info_callback(SSL *ssl,void (*cb)())
1656 ssl->info_callback=cb;
1659 void (*SSL_get_info_callback(SSL *ssl))()
1661 return((void (*)())ssl->info_callback);
1664 int SSL_state(SSL *ssl)
1669 void SSL_set_verify_result(SSL *ssl,long arg)
1671 ssl->verify_result=arg;
1674 long SSL_get_verify_result(SSL *ssl)
1676 return(ssl->verify_result);
1679 int SSL_get_ex_new_index(long argl,char *argp,int (*new_func)(),
1680 int (*dup_func)(),void (*free_func)())
1683 return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
1684 &ssl_meth,argl,argp,new_func,dup_func,free_func));
1687 int SSL_set_ex_data(SSL *s,int idx,void *arg)
1689 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1692 void *SSL_get_ex_data(SSL *s,int idx)
1694 return(CRYPTO_get_ex_data(&s->ex_data,idx));
1697 int SSL_CTX_get_ex_new_index(long argl,char *argp,int (*new_func)(),
1698 int (*dup_func)(),void (*free_func)())
1701 return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
1702 &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
1705 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
1707 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
1710 void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
1712 return(CRYPTO_get_ex_data(&s->ex_data,idx));
1720 X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
1722 return(ctx->cert_store);
1725 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
1727 if (ctx->cert_store != NULL)
1728 X509_STORE_free(ctx->cert_store);
1729 ctx->cert_store=store;
1732 int SSL_want(SSL *s)
1738 * \brief Set the callback for generating temporary RSA keys.
1739 * \param ctx the SSL context.
1740 * \param cb the callback
1743 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,int export,
1745 { SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,0,(char *)cb); }
1749 * \brief The RSA temporary key callback function.
1750 * \param ssl the SSL session.
1751 * \param export \c TRUE if the temp RSA key is for an export ciphersuite.
1752 * \param keylength if \c export is \c TRUE, then \c keylength is the size of
1753 * the required key in bits.
1754 * \return the temporary RSA key.
1755 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
1758 RSA *cb(SSL *ssl,int export,int keylength)
1763 * \brief Set the callback for generating temporary DH keys.
1764 * \param ctx the SSL context.
1765 * \param dh the callback
1768 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int export,
1770 { SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,0,(char *)dh); }
1772 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,int export,
1774 { SSL_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,0,(char *)cb); }
1776 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int export,
1778 { SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,0,(char *)dh); }
1780 #if defined(_WINDLL) && defined(WIN16)
1781 #include "../crypto/bio/bss_file.c"